Square miles to hectares conversion factor is 258.998811. To find out how many hectares in square miles, multiply the square mile by the conversion factor or use the converter.
1 Square Mile = 258.998811 Hectares
There are about 259 hectares in a square mile, because a hectare is a square with all sides are 100 meters in length and equals to 100 * 100 = 10 000 square meters and one mile is 1609.34 meters and equals to 1609.34 * 1609.34 = 2589975.2 square meters, that makes 2589975.2 / 10 000 = about 259 hectares in a square mile.
For example, to find out how many hectares there are in a square mile and a half, as a formula to convert from sq. miles to hectares, multiply the sq. mile value by 259, that makes 1.5 mi2 * 259 = 388.5 hectares in 1.5 sq. miles.
Square mile is an imperial and US Customary area unit and equals to 259 hectares, 640 acres and 2.59 square kilometers. The abbreviation is "mi2".
Hectare is a metric system area unit and equals to 10 000 sq. meters and 2.47 acres. The abbreviation is "ha".